Lightweight material replaces metals and glass to lower the cost of satellitesFAIRFAX, Va., Aug 25, 2008 (BUSINESS WIRE) -- ManTech International Corporation (Nasdaq:MANT) announced today that its Colorless Organic/Inorganic Nanocomposite (CORIN™) transparent polyimide film, used in space and electronics applications, has been recognized by R&D Magazine as one of the top 100 most innovative and technologically significant new products of the year. Called the "Oscars of Invention" by the Chicago Tribune, the R&D 100 awards are given annually to the technologies that have the potential to greatly affect further scientific discovery, human life, and society. Previous award winners include fax machines, ATMs and HDTV.

ManTech's CORIN™ XLS Polyimide is a colorless, sprayable polyimide nanocomposite that is clear, resistant to radiation and atomic oxygen erosion, and utilizes POSS(R) technology from Hybrid Plastics. CORIN™ XLS Polyimide was developed with funding from the Air Force Research Laboratory as a coating for high strength fibers exposed to atomic oxygen and UV degradation in low earth orbit. CORIN™ XLS Polyimide is ideal for use in space applications requiring high optical clarity and durability to atomic oxygen erosion, such as a replacement for glass covers in solar cells. CORIN™ XLS is also used in display and electronics applications requiring high optical clarity and polyimide-grade temperature stability.

ManTech's CORIN™ XLS Polyimide is part of a family of polymers developed by ManTech that have been used in spacecraft. ManTech's CP1™ Polyimide, a predecessor product to CORIN™ XLS, is a key component of NASA's experimental solar sail, which uses sunlight to propel vehicles through space, much the same way the wind pushes a sailboat through water. The 100 square foot sail is packed inside the NASA NanoSail-D satellite. ManTech engineers also helped to design the NASA NanoSail-D satellite.

"We are honored to be named an R&D 100 Award recipient," said the CORIN™ group leader, Garrett Poe, Ph.D., ManTech International Corporation. "Since satellites cost approximately $10,000 per kilogram launch weight, a huge portion of the satellite's cost is tied up in the fuel used to launch the satellite. We recognized the importance of replacing heavy portions of the satellite -- such as metals in support structures and glass in the photovoltaic arrays -- with lightweight replacements to lower the launch weight and therefore lower the overall satellite cost," he said.

"We designed the CORIN™ technology from the ground up," said Brandon Farmer, Ph.D., ManTech International Corporation. "We recognized the importance of producing a polyimide coating that exhibits the properties we were seeking, and also the importance of producing the coating resins in multi-ton quantities without needing to design a new production plant around the product. CORIN™ XLS fits perfectly into our existing production line of high performance polyimides."

Traditional polyimide films exhibit high temperature stability but require high curing temperatures, are yellow/orange colored, and rapidly degrade upon exposure to atomic oxygen. ManTech's CORIN™ XLS Polyimide offers temperature stability common to most polyimides, but adds high optical clarity, room temperature cure, and unmatched resistance to degradation from atomic oxygen and anisotropic plasma etching. Additional information on ManTech's CORIN™ XLS can be found at www.mantechmaterials.com or by calling 256-971-7000.

The first R&D 100 Awards were given in 1963. Many entries over the years have become household names, including Polacolor film (1963), the flashcube (1965), the automated teller machine (1973), the halogen lamp (1974), the fax machine (1975), the liquid crystal display (1980), the printer (1986), the Kodak Photo CD (1991), the Nicoderm anti-smoking patch (1992), Taxol anticancer drug (1993), lab on a chip (1996), and HDTV (1998).

One hundred winners that exemplify the best new technologies were chosen from an international pool of contestants from universities, private corporations, and government labs. Winners of the 2008 R&D 100 Awards appear in the September issue of R&D magazine.

About ManTech International Corporation:

Headquartered in Fairfax, Virginia with more than 7,400 professionals, ManTech International Corporation is a leading provider of innovative technologies and solutions for mission-critical national security programs for the Intelligence Community; the departments of Defense, State, Homeland Security and Justice; the Space Community and other U.S. federal government customers. ManTech's expertise includes systems engineering, systems integration, software development, enterprise architecture, cyber security, information assurance, intelligence operations and analysis support, network and critical infrastructure protection, information operations and information warfare support, information technology, communications integration, logistics and supply chain management, and service oriented architectures. The company supports the advanced telecommunications systems that are used in Operation Iraqi Freedom and in other parts of the world; has developed a secure, collaborative communications system for the U.S. Department of Homeland Security; and builds and maintains secure databases that track terrorists. The company operates in the United States and 40 countries. In 2008, BusinessWeek magazine chose ManTech for its 2008 'InfoTech 100' listing representing the best performing tech companies in the world. In 2007, ManTech was named one of BusinessWeek.com's fastest growing tech companies; to Business 2.0 magazine's 100 Fastest Growing Technology Companies list for the second year in a row; to the Deloitte & Touche list of the 50 fastest growing technology companies in Virginia; and a GI Jobs magazine Top Ten Military Friendly Employer. Additional information on ManTech can be found at www.mantech.com.

Forward-Looking Information:

Statements and assumptions made in this press release, which do not address historical facts, constitute "forward-looking" statements that ManTech believes to be within the definition in the Private Securities Litigation Reform Act of 1995 and involve risks and uncertainties, many of which are outside of our control. Words such as "may," "will," "intends," "should," "expects," "plans," "projects," "anticipates," "believes," "estimates," "predicts," "potential," "continue," or "opportunity," or the negative of these terms or words of similar import are intended to identify forward-looking statements.

These forward-looking statements are subject to known and unknown risks and uncertainties, which could cause actual results to differ materially from those anticipated, including, without limitation: adverse changes in U.S. government spending priorities; failure to retain existing U.S. government contracts, win new contracts, or win recompetes; adverse results of U.S. government audits of our government contracts; risks associated with complex U.S. government procurement laws and regulations; adverse effect of contract consolidation; risk of contract performance or termination; failure to obtain option awards, task orders or funding under contracts; adverse changes in our mix of contract types; failure to successfully integrate recently acquired companies or businesses into our operations or to realize any accretive or synergistic effects from such acquisitions; failure to identify, execute or effectively integrate future acquisitions; and competition. These and other risk factors are more fully discussed in the section entitled "Risks Factors" in ManTech's Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 17, 2008, and, from time to time, in ManTech's other filings with the Securities and Exchange Commission, including among others, its reports on Form 10-Q.

The forward-looking statements included in this news release are only made as of the date of this news release and ManTech undertakes no obligation to publicly update any of the forward-looking statements made herein, whether as a result of new information, subsequent events or circumstances, changes in expectations or otherwise.